Gluons


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Related to Gluons: Quarks

Gluons

The hypothetical force particles believed to bind quarks into “elementary” particles. Although theoretical models in which the strong interactions of quarks are mediated by gluons have been successful in predicting, interpreting, and explaining many phenomena in particle physics, free gluons remain undetected in experiments (as do free quarks). According to prevailing opinion, an individual gluon cannot be isolated.

According to quantum chromodynamics (QCD), the mediators of the strong interaction are eight massless vector bosons, which are named gluons because they make up the “glue” that binds quarks together. It is hoped that the infinite range of the forces mediated by the gluons may help to explain why free quarks have not been isolated. The gluons themselves carry color. Hence, strong interactions among gluons will also occur through the exchange of gluons. It is therefore believed that gluons, as well as quarks, may be permanently confined. According to this view, only colorless objects may exist in isolation. See Elementary particle, Quantum chromodynamics, Quarks

References in periodicals archive ?
In this new work, Wang's team refined a probe that makes use of a phenomenon researchers at Berkeley Lab first theoretically outlined 20 years ago: energy loss of a high-energy particle, called a jet, inside the quark gluon plasma.
For less than a billionth of a trillionth of a second, quarks and gluons flowed freely in a frictionless fluid that hadn't existed for 13.
In the QCD case, roughly, the current algebra model provides some structural knowledge of the underlying level--the 'deeper' level of the hadronic constituents, the quarks and gluons.
Physicists widely believed that at the high temperatures created in the aftermath of the Big Bang, the forces that normally bind quarks and gluons together would have resulted in a substance that behaved similar to a gas.
The hot stuff produced at Brookhaven is a quark-gluon plasma and it spills out like a soup made of quarks and gluons.
This table is made of wood, which is formed by sinews of cellulose, which is formed by molecules, which are made up of atoms, which form from protons, neutrons and electrons, which contain quarks and gluons.
In the very early universe about a millionth of a second after the Big Bang, it was so hot and dense that normal matter as we know it melts and you have this soup of quarks and gluons," explains Dr Evans.
He and others later constructed the quantum field theory of quarks and gluons called quantum chromodynamics, which seems to account for all the nuclear particles and their strong interactions.
The recent success involves the duplication of a state in the early history of the universe called quark-gluon plasma (QGP), which shows quarks and gluons behaving differently from usual, members of the Pioneering High Energy Nuclear Interacting Experiment (PHENIX) said.
He points out that he's completely convinced of the existence of elemental particles like quarks and gluons, the most basic constituents of matter that currently are known to us, without ever having seen them.
The Nobel prize-winning physicist was expressing his dismay at the ever-growing list of names--quarks, neutrinos, leptons, gluons, bosons, etc.
At present, we have detailed maps of the distribution of quarks and gluons in the nucleon in 1D (as a function of their momentum in a single direction).